edited by Galen Wood Ewing
M. Dekker, 1997
Buku Referensi
Carr, Joseph J., author
Reston Publishing, 1982
Buku Teks
Edited by Margaret Simmons; Rebecca Koskela
Addison-Wesley Pub., 1990
Buku Teks
editor, John G. Webster
John Wiley & Sons, 1998
Buku Teks
editor, John G. Webster
CRC Press, 1999
Buku Referensi